MDCAT Chemistry MCQ #4298

The density of an ideal gas at 1 atm and 273 K is 1.25 g/L. What is its molar mass?

MDCAT Chemistry MCQ #4298

  1. Question 1

    Q1. The density of an ideal gas at 1 atm and 273 K is 1.25 g/L. What is its molar mass?

    • A) 28 g/mol
    • B) 32 g/mol
    • C) 40 g/mol
    • D) 44 g/mol

    Answer: 28 g/mol

    Explanation: M = dRT/P = 28 g/mol. Option B is incorrect molar mass for a different gas.